Self-positioning crawler-type metal energy dissipater capable of coordinating deformation

Abstract

The utility model relates to a self-positioning crawler-type metal energy dissipater capable of coordinating deformation, which comprises an upper restraining plate, a lower restraining plate and an annular crawler-type energy dissipation mechanism. The supporting wheel assembly is arranged in the annular crawler belt, the positioning disc is connected to the outer side of the supporting wheel assembly through the fixing bolts and the fixing nuts, and due to lateral constraint of the positioning disc on the annular crawler belt, the self-positioning function of the annular crawler belt during deformation can be achieved; meanwhile, due to the existence of the supporting wheel assemblies, when the annular track is plastically deformed, the energy consumption area of the annular track is always in an arc state, deformation coordination is uniform and controllable, the stress concentration problem of the annular track is avoided, the stability of the metal energy dissipater is effectively improved, the fatigue life of the metal energy dissipater is effectively prolonged, and a high energy consumption level can be achieved. The device can adapt to large deformation, metal energy consumption is even and sufficient, the fatigue performance is good, stability is high, and construction and installation are convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of energy dissipation and shock absorption of bridge engineering, in particular to a self-positioning and coordinately deformable crawler-type metal energy dissipator. Background Art

[0002] At present, the shock-absorbing structures used in bridges mainly include friction pendulum bearings, viscous dampers, shock-absorbing rubber bearings, etc. When the earthquake impact is not high and the displacement is not large, they can play a good shock-absorbing role and are suitable for remote earthquake areas. However, for the near-seismic areas of the earthquake fault zone, when an earthquake occurs, the earthquake impact is strong and the displacement is large. How to carry out structural shock absorption in such areas has become a problem to be solved by technicians in this field.

[0003] The existing tracked metal energy absorber mainly relies on the plastic deformation of the metal material in the U-shaped area to dissipate energy. How to control the deformation form of the U-shaped section is the key to the design. The U-shaped energy dissipation area in the existing technology has the following main disadvantages: during the deformation of the U-shaped area, the actual force will be concentrated at the intersection of the arc and the straight line, causing stress concentration, and the shape is uncontrollable during the energy dissipation deformation process, and the stress will gradually concentrate. Therefore, this position will fatigue faster than other areas and suffer fatigue failure. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a self-positioning and coordinately deformable crawler-type metal energy dissipator to solve the problem of stress concentration.

[0005] The technical solution adopted by the utility model is: a self-positioning and coordinately deformable track-type metal energy dissipator, characterized in that it includes an upper constraint plate, a lower constraint plate and an annular track energy dissipation mechanism arranged between the upper constraint plate and the lower constraint plate, the upper constraint plate is fixed to the upper main structure by an upper anchor rod, and the lower constraint plate is fixed to the lower main structure by a lower anchor rod; the annular track energy dissipation mechanism includes an annular track and a supporting wheel assembly arranged inside the annular track, the upper outer surface of the annular track is in close contact with the bottom surface of the upper constraint plate, and the lower outer surface of the annular track is in close contact with the top surface of the lower constraint plate.

[0006] Preferably, the support wheel assembly includes a first limiting wheel, a second limiting wheel, a positioning wheel, a first supporting wheel and a second supporting wheel, the first limiting wheel being arranged at one end of the circular track, and the second limiting wheel being arranged at the other end of the circular track; the positioning wheel being arranged between the first limiting wheel and the second limiting wheel, a first supporting wheel being arranged between the positioning wheel and the first limiting wheel, and a second supporting wheel being arranged between the positioning wheel and the second limiting wheel.

[0007] Preferably, the annular track is a long annular structure with semicircular arcs at both ends and a straight line in the middle, including arc segments capable of generating plastic energy consumption arranged at both ends, a fixed segment arranged in the middle, and a straight segment capable of generating plastic energy consumption arranged between the arc segments and the fixed segments; the arc segment at one end wraps around the first limiting wheel, and the arc segment at the other end wraps around the second limiting wheel; the upper and lower inner surfaces of the fixed segment are in close contact with the positioning wheel; the first support wheel and the second support wheel are in close contact with the corresponding straight segments.

[0008] Preferably, both sides of the first limiting wheel and the second limiting wheel are provided with limiting discs, the diameter of the limiting discs is greater than the height of the annular track, and the disc surface of the limiting discs is in close contact with the side surface of the annular track.

[0009] Preferably, rubber gaskets are provided between the first limiting wheel and the second limiting wheel and the corresponding limiting discs.

[0010] Preferably, the upper and lower inner surfaces of the fixed section are provided with positioning plates, the upper constraint plate is fixedly connected to the fixed section at the upper part of the circular track through corresponding positioning plates and positioning rods, and the lower constraint plate is fixedly connected to the fixed section at the lower part of the circular track through corresponding positioning plates and positioning rods.

[0011] Preferably, the upper and lower inner surfaces of the fixed section are provided with positioning plates, and a sliding plate is provided between the lower part of the annular track and the lower constraint plate; the upper constraint plate is fixedly connected to the fixed section at the upper part of the annular track through the corresponding positioning plate and positioning rod, and the sliding plate is fixedly connected to the fixed section at the lower part of the annular track through the corresponding positioning plate and positioning rod.

[0012] Preferably, a stop bar is provided on the lower constraint plate at a position corresponding to the sliding plate, and the sliding plate can slide linearly along the stop bar on the lower constraint plate.

[0013] Preferably, the annular track is made of a plastic energy-absorbing metal material.

[0014] Preferably, the annular crawler track is a multi-layer structure.

[0015] The beneficial effects achieved by the utility model are as follows: the support wheel assembly is arranged inside the annular track and connected to the positioning disc on its outer side through fixing bolts and fixing nuts. Due to the lateral constraint of the positioning disc on the annular track, the self-positioning function of the annular track during deformation can be realized; at the same time, due to the existence of the support wheel assembly, when the annular track is plastically deformed, its energy consumption area is always in a circular arc state, and the deformation is coordinated, uniform and controllable, avoiding the problem of stress concentration of the annular track, effectively improving the stability and fatigue life of the metal energy dissipator, and achieving a higher energy consumption level. The present invention can adapt to a larger deformation amount, the metal energy consumption is uniform and sufficient, the fatigue performance is good, the stability is high, and the construction and installation are convenient. The utility model has the following advantages:

[0016] 1. The support wheel assembly ensures that the energy consumption section always maintains an arc-shaped area, maintaining the continuous stability of the energy consumption capacity;

[0017] 2. The supporting wheel assembly prevents the arc-shaped energy-consuming area from being sunken or squeezed out of shape, thus avoiding premature deformation and damage of the energy-consuming arc segment and enhancing the durability of the working stroke;

[0018] 3. The travel and tonnage that can be tolerated are large, and the deformation is evenly distributed in the entire U-shaped energy dissipation area. Therefore, the energy dissipator has good hysteresis performance under large deformation, making the energy dissipator work more stable and reliable;

[0019] 4. The structure is reasonably designed and easy to use and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 for Figure 1 The front elevation section view of

[0022] Figure 3 for Figure 1 A side elevation cross-sectional view of

[0023] Figure 4 for Figure 1 A plan cross-sectional view of

[0024] Figure 5 Another embodiment of the utility model;

[0025] Figure 6 for Figure 5 The front elevation section view of

[0026] Figure 7 for Figure 5 A side elevation cross-sectional view of

[0027] Figure 8 for Figure 5 A plan cross-sectional view of

[0028] In the figure: 1-upper constraint plate; 2-lower constraint plate; 3-annular crawler track; 4-support wheel assembly; 41-first limiting wheel; 42-second limiting wheel; 43-positioning wheel; 44-first support wheel; 45-second support wheel; 46-limiting disc; 47-fixing bolt; 48-fixing nut; 5-upper anchor rod; 6-lower anchor rod; 7-positioning plate; 8-positioning rod; 9-sliding plate; 10-speed bar. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-8 As shown, the utility model is a self-positioning and coordinately deformable crawler type metal energy dissipator, comprising an upper constraint plate 1, a lower constraint plate 2 and an annular track energy dissipation mechanism arranged between the upper constraint plate 1 and the lower constraint plate 2, the upper constraint plate 1 is fixed to the upper main structure by an upper anchor rod 5, and the lower constraint plate 2 is fixed to the lower main structure by a lower anchor rod 6; the annular track energy dissipation mechanism comprises an annular track 3 and a supporting wheel assembly 4 arranged inside the annular track 3, the upper outer surface of the annular track 3 is in close contact with the bottom surface of the upper constraint plate 1, and the lower outer surface of the annular track 3 is in close contact with the top surface of the lower constraint plate 2.

[0031] In this embodiment, the support wheel assembly 4 includes a first limiting wheel 41, a second limiting wheel 42, a positioning wheel 43, a first supporting wheel 44 and a second supporting wheel 45. The first limiting wheel 41 is arranged at one end of the annular track 3, and the second limiting wheel 42 is arranged at the other end of the annular track 3; the positioning wheel 43 is arranged between the first limiting wheel 41 and the second limiting wheel 42, a first supporting wheel 44 is arranged between the positioning wheel 43 and the first limiting wheel 41, and a second supporting wheel 45 is arranged between the positioning wheel 43 and the second limiting wheel 42. Due to the existence of the support wheel assembly 4, when the annular track 3 is plastically deformed, its energy consumption area is always in an arc state, and the deformation is coordinated, uniform and controllable, avoiding the problem of stress concentration of the annular track 3, effectively improving the stability and fatigue life of the metal energy absorber, and achieving a higher energy consumption level.

[0032] In this embodiment, the annular track 3 is a long annular structure with semicircular arcs at both ends and a straight line in the middle, including arc segments capable of generating plastic energy consumption arranged at both ends, a fixed segment (which does not deform and serves to transfer loads) arranged in the middle, and a straight segment capable of generating plastic energy consumption arranged between the arc segment and the fixed segment; the arc segment at one end wraps the first limiting wheel 41, and the arc segment at the other end wraps the second limiting wheel 42; the upper and lower inner surfaces of the fixed segment are in close contact with the positioning wheel 43; the first support wheel 44 and the second support wheel 45 are in close contact with the corresponding straight segments.

[0033] In this embodiment, both sides of the first limiting wheel 41 and the second limiting wheel 42 are provided with limiting discs 46, the diameter of the limiting discs 46 is greater than the height of the annular track 3 by 20 mm, and the disc surface of the limiting discs 46 is in close contact with the side of the annular track 3; the fixing bolts 47 pass through the corresponding limiting wheels (the first limiting wheel 41 and the second limiting wheel 42) and the positioning discs 46 and are positioned in the annular track 3 by the fixing nuts 48 at both ends of the fixing bolts 47. The supporting wheel assembly 4 is arranged inside the annular track 3 and the positioning discs 46 are connected to the outer side thereof by the fixing bolts 47 and the fixing nuts 48. Due to the lateral constraint of the positioning discs 46 on the annular track 3, the self-positioning function of the annular track 3 during deformation can be realized.

[0034] In this embodiment, a rubber gasket 49 is provided between the first limiting wheel 41 and the second limiting wheel 42 and the corresponding limiting disc 46. The diameters of the first limiting wheel 41, the second limiting wheel 42, the positioning wheel 43, the first supporting wheel 44 and the second supporting wheel 45 are equal, and the rubber gasket 49 is equal to the diameter of the first limiting wheel 41 or the second limiting wheel 42.

[0035] In this embodiment, the annular track 3 is a multi-layer structure made of plastic energy-absorbing metal materials, including but not limited to low-carbon steel, alloy steel, shape memory alloy and other metal materials; the first limiting wheel 41, the second limiting wheel 42, the positioning wheel 43, the first support wheel 44, the second support wheel 45, the upper constraint plate 1 and the lower constraint plate 2 are all made of steel.

[0036] The self-positioning and coordinately deformable crawler-type metal energy dissipator of the utility model can be divided into two types: a fixed type and a sliding type.

[0037] like Figure 1-4 It is a fixed type, which can consume energy in one direction (along the length direction of the circular crawler 3) and be fixed in the direction perpendicular to it (along the width direction of the circular crawler 3). Its structure is as follows: the upper and lower inner surfaces of the fixed section are provided with positioning plates 7, the upper constraint plate 1 is fixedly connected to the fixed section at the upper part of the circular crawler 3 through the corresponding positioning plates 7 and positioning rods 8, and the lower constraint plate 2 is fixedly connected to the fixed section at the lower part of the circular crawler 3 through the corresponding positioning plates 7 and positioning rods 8.

[0038] like Figure 5-8It is a sliding type, which can consume energy in one direction (along the length direction of the annular track 3) and slide in a direction perpendicular to it (along the width direction of the annular track 3). Its structure is as follows: the upper and lower inner surfaces of the fixed section are provided with positioning plates 7, and a sliding plate 9 is provided between the lower part of the annular track 3 and the lower constraint plate 2; the upper constraint plate 1 is fixedly connected to the fixed section at the upper part of the annular track 3 through the corresponding positioning plates 7 and positioning rods 8, and the sliding plate 9 is fixedly connected to the fixed section at the lower part of the annular track 3 through the corresponding positioning plates 7 and positioning rods 8. A stop bar 10 is provided at the position corresponding to the sliding plate 9 on the lower constraint plate 2, and the sliding plate 9 can slide linearly along the stop bar 10 on the lower constraint plate 2.

[0039] It should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the utility model thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solution of the utility model is limited only by the scope of the claims.

[0040] Finally, it should be pointed out that the above embodiments are only representative examples of the present utility model. Obviously, the present utility model is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model shall be considered to belong to the protection scope of the present utility model.

Claims

1. A self-positioning and coordinately deformable crawler-type metal energy absorber, characterized in that: It includes an upper constraint plate, a lower constraint plate and an annular track energy dissipation mechanism arranged between the upper constraint plate and the lower constraint plate, the upper constraint plate is fixed to the upper main structure by an upper anchor rod, and the lower constraint plate is fixed to the lower main structure by a lower anchor rod; the annular track energy dissipation mechanism includes an annular track and a supporting wheel assembly arranged inside the annular track, the upper outer surface of the annular track is in close contact with the bottom surface of the upper constraint plate, and the lower outer surface of the annular track is in close contact with the top surface of the lower constraint plate.

2. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 1 is characterized in that: The supporting wheel assembly comprises a first limiting wheel, a second limiting wheel, a positioning wheel, a first supporting wheel and a second supporting wheel, wherein the first limiting wheel is arranged at one end of the annular track and the second limiting wheel is arranged at the other end of the annular track; the positioning wheel is arranged between the first limiting wheel and the second limiting wheel, a first supporting wheel is arranged between the positioning wheel and the first limiting wheel, and a second supporting wheel is arranged between the positioning wheel and the second limiting wheel.

3. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 2 is characterized in that: The annular track is a long annular structure with semicircular arcs at both ends and a straight line in the middle, including arc segments that can generate plastic energy consumption at both ends, a fixed segment in the middle, and a straight segment that can generate plastic energy consumption between the arc segment and the fixed segment; the arc segment at one end wraps the first limiting wheel, and the arc segment at the other end wraps the second limiting wheel; the upper and lower inner surfaces of the fixed segment are in close contact with the positioning wheel; the first support wheel and the second support wheel are in close contact with the corresponding straight segments.

4. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 2 is characterized in that: Both sides of the first limiting wheel and the second limiting wheel are provided with limiting discs, the diameter of the limiting discs is greater than the height of the annular crawler track, and the disc surface of the limiting discs is in close contact with the side surface of the annular crawler track.

5. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 4 is characterized in that: Rubber gaskets are arranged between the first limiting wheel and the second limiting wheel and the corresponding limiting discs.

6. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 3 is characterized in that: The upper and lower inner surfaces of the fixed section are both provided with positioning plates, the upper constraint plate is fixedly connected to the fixed section at the upper part of the circular track through the corresponding positioning plates and positioning rods, and the lower constraint plate is fixedly connected to the fixed section at the lower part of the circular track through the corresponding positioning plates and positioning rods.

7. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 3 is characterized in that: The upper and lower inner surfaces of the fixed section are both provided with positioning plates, and a sliding plate is provided between the lower part of the annular track and the lower constraint plate; the upper constraint plate is fixedly connected to the fixed section at the upper part of the annular track through the corresponding positioning plate and the positioning rod, and the sliding plate is fixedly connected to the fixed section at the lower part of the annular track through the corresponding positioning plate and the positioning rod.

8. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 7 is characterized in that: A stop bar is provided on the lower constraint plate at a position corresponding to the sliding plate, and the sliding plate can slide linearly along the stop bar on the lower constraint plate.

9. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 1 is characterized in that: The annular crawler is made of plastic energy-absorbing metal material.

10. The self-positioning and coordinately deformable crawler-type metal energy absorber according to claim 1 is characterized in that: The annular crawler belt is a multi-layer structure.

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